Bulgaria's most well-known physics teacher, Teodosi Teodosiev, continues to inspire young scientists long after retirement.

At a summer camp in the Balkan Mountains, the 78-year-old volunteer mentors 50 of the country's most talented physics students, promoting discipline, hard work and a passion for learning.

His decades of dedication have helped students achieve international success, including physicist Katerina Naydenova, whose research could advance disease treatment.

Despite concerns about Bulgaria's education and research funding, Teodosiev remains committed to shaping future generations.